破伤风由于早期的张口困难、牙关紧闭症状,首诊于口腔科者,屡见不鲜。有明显的创伤史者诊断较易。在缺乏损伤史或无明显的侵入病灶时,尤其是病菌侵入部位病变的并发症当与本病相鉴别时,在破伤风典型症状出现前,单凭早期症状,确定诊断较难。我科临床所见由中耳炎感染破伤风误诊颞下颌关节炎一例,报道如下。 Tetanus due to early mouth opening difficulties, trismus symptoms, the first diagnosis in the dentist, are not uncommon. There are obvious history of trauma diagnosis easier. In the absence of a history of injury or no obvious invasive lesions, especially when the pathogen invade the complications of the disease when differentiated from the disease before the typical symptoms of tetanus appear, the early symptoms alone, to determine the diagnosis more difficult. Clinical findings in our department by otitis media infection tetanus misdiagnosed as a case of temporomandibular joint arthritis, reported as follows.